IMEGE

#!/bin/bash

if [[ $# -ne 2 ]]; then
    echo "Usage: $(basename $0) exp1 exp2" >&2
    exit 1
fi

TMP=/tmp/imege$$

trap "rm -f $TMP*" EXIT

#Create temp files with the LaTeX expressions
echo "$1" > $TMP.exp1
echo "$2" > $TMP.exp2

#Image generation of expressions
l2p -o $TMP.img1.png -d 600 -p amsmath,amssymb,amsfonts $TMP.exp1
l2p -o $TMP.img2.png -d 600 -p amsmath,amssymb,amsfonts $TMP.exp2

#Transformation to PGM
convert $TMP.img1.png $TMP.rec.pgm
convert $TMP.img2.png $TMP.ref.pgm

#Set values to [0,255]
pnmdepth 255 $TMP.rec.pgm > $TMP.rec
pnmdepth 255 $TMP.ref.pgm > $TMP.ref

#Precision BIDM(exp1,exp2)
p=$(BIDM/bidm $TMP.rec $TMP.ref 35 31 -i 2)
#Recall    BIDM(exp2,exp1)
r=$(BIDM/bidm $TMP.ref $TMP.rec 35 31 -i 2)

#Harmonic mean (f-measure)
echo $p $r | awk '{
    if($1==0.0 && $2==0.0)
      f=0.0
    else
      f=2*(($1*$2)/($1+$2))
    printf("%2.2f\n", 100*(1-f))}'

exit 0